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Large length submarine cable production monitoring method

A submarine cable and large-length technology, which is applied in the field of production monitoring of large-length submarine cables, can solve the problems of complex production and manufacturing technology of large-length submarine cables, complicated and difficult large-scale projects, etc.

Inactive Publication Date: 2017-01-04
HENGTONG SUBMARINE POWER CABLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production technology of large-length submarine cables is relatively complicated, and is considered a complex and difficult large-scale project by countries all over the world.

Method used

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  • Large length submarine cable production monitoring method
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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0029] see figure 1 and figure 2 , the embodiment of the present invention includes:

[0030] A large-length submarine cable production monitoring system includes: an electric field monitoring unit, a stress field monitoring unit and a temperature field monitoring unit.

[0031] The electric field monitoring unit includes a monochromatic light source 6, an optical circulator 7, an optical fiber 8 distributed in a monitored submarine cable, a sensor head 9, a photoelectric amplifier 10, an oscilloscope 11 and an optical time domain reflectometer; the monochromatic light source 6 Communicate with the optical circulator 7, the optical fiber 8 con...

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Abstract

The invention provides a large length submarine cable production monitoring method. The method comprises the steps that (100) optical fibers are distributed into a submarine cable in submarine cable pre-production process; (200) a monitoring system which comprises the optical fiber is used to monitor the information of stress field, temperature field and electric field during the subsequent production of the submarine cable; and (300) according to the change of the stress and temperature of the cable and the intensity of the electric field, the breakdown position of the cable is judged, and the breakdown type is judged. The large length submarine cable production monitoring method provided by the invention can quickly judge the damage site of the cable production and judge the damage degree.

Description

technical field [0001] The invention relates to the field of power cable production measurement, in particular to a production monitoring method for large-length submarine cables. Background technique [0002] Submarine cables are mainly used in three areas: 1. Continent and island, island and island; 2. Continent and oil platform; 3. Offshore wind farm transmission. Our country is a large ocean country with a long coastline. Submarine cables play a key role in both people's life and power transmission. [0003] Due to the special laying conditions of submarine cables, large-length submarine cables without joints are a key link in power transmission. However, the manufacturing technology of large-length submarine cables is relatively complicated, and is considered a complex and difficult large-scale project by countries all over the world. Therefore, the monitoring of the submarine cable production process can find the location of the fault point in time and reduce the occ...

Claims

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 赵文博宋光辉杨洪亮
Owner HENGTONG SUBMARINE POWER CABLE CO LTD